Self-styled godman Namdeo Das Tyagi aka Computer Baba on Tuesday joined office at the Madhya Pradesh Secretariat and demanded a helicopter for the inspection of the Narmada. He was appointed the Chairman of Narmada, Kshipra and Mandakini Rivers Trust in March by the state government. He said he'll need a modern "astra-shastra" (weaponry) if the river is to be saved.